Hacktool.Screenlogger

Hacktool.Screenlogger

Updated:
February 13, 2007
Version:
1.01
Publisher:
Mikko Technology
Risk Impact:
High
File Names:
slman.exe loadwin.exe slview.exe zlib. sldrv.dll read_me.txt order.txt [date].IDX [date]
Systems Affected:
Windows

Behavior


Hacktool.Screenlogger captures screenshots from a computer. Screen capture can be triggered based on time intervals, keystrokes or mouse events. It saves the screenshots locally on the computer as log files, but does not contain functionality to allow remote access to these log files.

Symptoms


Files are detected as Hacktool.Screenlogger.

Behavior


Hacktool.Screenlogger must be manually installed.

Antivirus Protection Dates

  • Initial Rapid Release version October 02, 2014 revision 022
  • Latest Rapid Release version December 01, 2017 revision 016
  • Initial Daily Certified version December 15, 2004
  • Latest Daily Certified version December 02, 2017 revision 001
  • Initial Weekly Certified release date December 15, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When the Hacktool.Screenlogger is executed, it performs the following actions:
  1. Creates the following files:
    • <installpath>\slman.exe
    • <installpath>\slview.exe
    • <installpath>\order.txt
    • <installpath>\read_me.txt
    • <installpath>\uninst.exe
    • <installpath>\log\[date].IDX
    • <installpath>\log\[date].MIM
    • <installpath>\log\MAINIDX.MDX
    • <installpath>\log\MAINIDX.TMP
    • %SYSTEM%\loadwin.exe
    • %SYSTEM%\sldrv.dll
    • %SYSTEM%\zlib.dll

      Note: %System% is a variable that refers to the System folder. By default this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

  2. Adds the following value:

    "SL Loader" = "%SYSTEM%\loadwin.exe"

    to the following registry key:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

    so that the Hacktool runs when you start Windows.

  3. Adds the following registry keys:

    HKEY_LOCAL_MACHINE\Software\ScreenLogger
    HKEY_CURRENT_USER\Software\ScreenLogger



Before you begin: This hack tool may include an uninstaller. The uninstaller file is usually <installpath>\uninst.exe. Using Windows Explorer, see if this file exists.
  • If you cannot find the file, follow the instructions below.
  • If the file does exist, double-click it and follow any prompts. After the uninstaller is finished, to make sure that the threat has been removed, follow the instructions below.

The following instructions pertain to all Symantec antivirus products that support Security Risk detection.
  1. Update the definitions.
  2. Restart the computer in Safe mode.
  3. Run a full system scan.
  4. Remove the install folder.
For specific details on each of these steps, read the following instructions.

1. To update the definitions
To obtain the most recent definitions, start your Symantec program and run LiveUpdate.

2. To restart the computer in Safe mode
Shut down the computer and turn off the power. Wait for at least 30 seconds, and then restart the computer in Safe mode. For instructions, read the document, "How to start the computer in Safe Mode ."

3. To run the scan
  1. Start your Symantec antivirus program, and then run a full system scan.
  2. If any files are detected as Hacktool.Screenlogger and depending on which software version you are using, you may see one or more of the following options:

    Note: This applies only to versions of Norton AntiVirus that support Security Risk detection. If you are running a version of Symantec AntiVirus Corporate Edition that supports Security Risk detection, and Security Risk detection has been enabled, you will only see a message box that gives the results of the scan. If you have questions in this situation, contact your network administrator.
    • Exclude (Not recommended): If you click this button, it will set the threat so that it is no longer detectable. That is, the antivirus program will keep the security risk on your computer and will no longer detect it to remove from your computer.

    • Ignore or Skip: This option tells the scanner to ignore the threat for this scan only. It will be detected again the next time that you run a scan.

    • Cancel: This option is new to Norton Antivirus 2005. It is used when Norton Antivirus 2005 has determined that it cannot delete a security risk. This Cancel option tells the scanner to ignore the threat for this scan only, and thus, the threat will be detected again the next time that you run a scan.

      To actually delete the security risk:
      • Click its file name (under the Filename column).
      • In the Item Information box that displays, write down the full path and file name.
      • Then use Windows Explorer to locate and delete the file.

    • Delete: This option will attempt to delete the detected files. In some cases, the scanner will not be able to do this.
      • If you see a message, "Delete Failed" (or similar message), manually delete the file.
      • Click the file name of the threat that is under the Filename column.
      • In the Item Information box that displays, write down the full path and file name.
      • Then use Windows Explorer to locate and delete the file.

4. To delete the value from the registry

Important:
Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified keys only. Read the document, "How to make a backup of the Windows registry ," for instructions.
  1. Click Start > Run.
  2. Type regedit

    Then click OK.

  3. Navigate to the key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  4. In the right pane, delete the value:

    "SL Loader" = "%SYSTEM%\loadwin.exe"

  5. Navigate to and delete the following keys:

    HKEY_LOCAL_MACHINE\SOFTWARE\ScreenLogger
    HKEY_CURRENT_USER\Software\ScreenLogger

  6. Exit the Registry Editor.

5. To remove the install folder
Navigate to and delete the folder in which ScreenLogger is installed.

Note: By default the folder is C:\sl.


`